Massachusetts State Senate · 2026 general · all 40 seats
Democrats keep a majority in the Massachusetts State Senate
Democrats hold 34 seats and Republicans 4, with 2 still being counted; 21 make a majority.
0 seats flipped to Democrats0 to Republicans2 still uncalled
Source: civicAPI unofficial results and race callsUpdated Nov 7, 2026, 3:01 PM ET
Source: civicAPI unofficial results and race callsUpdated Nov 7, 2026, 3:01 PM ET
Every race, by how close it was
All 34 races by the winner’s margin, D − R. The shaded band holds the 0 races decided by under 5 points. Ringed dots flipped; amber dots are still being counted. The 27 seats won without an opponent sit at the ends.
- Democratic
- Republican
- Counting
- Flipped
- Under 5 points
Unofficial returns. Source: civicAPI unofficial results and race callsUpdated Nov 7, 2026, 3:01 PM ET
Closest called races
Smallest winning margins.
Biggest swings
Change in margin from the last race on the same lines.
Source: civicAPI unofficial results and race callsUpdated Nov 7, 2026, 3:01 PM ET
How far each district moved
Change in each contested district’s margin from the previous election, in 2-point bins. The median district moved D +6.8.
6 contested districts; districts uncontested in either election are left out.
Source: Past results: 99chambers results archive (MEDSL, Klarner, state election offices)
Massachusetts State Senate in other elections
- 2024 Dem. 35–5
- 2022 Dem. 37–3
- 2020 Dem. 37–3
- 2018 Dem. 34–6
- The Massachusetts State Senate →
Also on this ballot
Sources